Is peanut butter a complete or incomplete protein?

Online Answer
Complete proteins, which are found in animal products such as meat, contain all the essential amino acids. Incomplete proteins, which tend to come from plant sources such as beans, do not. Although peanut butter and bread on their own are incomplete proteins, they can be used as complementary proteins.
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The FASEB/LSRO report on the safety of amino acids as dietary supplements concluded the following: There is no nutritional rationale to the use of amino acids as dietary supplements, and such a practice can be dangerous. Supplemental amino acids are used for pharmacological rather than nutritional purposes..
As a result, they must come from food. The 9 essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.